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Finding the Fourth Proportional to 638,010.51, 957,155.93 and 188,696.36

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Solution

The fourth proportional to 638,010.51, 957,155.93 and 188,696.36 is: 283,085.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,010.51 : 957,155.93 = 188,696.36 : x
  2. Step 2: Convert to fraction form
    638,010.51/957,155.93 = 188,696.36/x
  3. Step 3: Cross multiply
    638,010.51x = 957,155.93 × 188,696.36
  4. Step 4: Simplify right side
    638,010.51x = 180,611,834,214.15
  5. Step 5: Solve for x
    x = 180,611,834,214.15/638,010.51
  6. Step 6: Final answer
    x = 283,085.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.